Jangjun Kim vs Justin Boulais — Winston Salem CH Qualifying Round 1

Winston Salem CH · CHALLENGER · Qualifying Round 1
KOR
Jangjun Kim
#856ATP
19 yrs
Last 10 · pre-match
WWLWLLL
2 — 1
Sets
Monday, 8 September 2025
hard
Justin Boulais
CAN9
Justin Boulais
#396ATP
1352ELO
1326Hard ELO
24 yrs · 183 cm · Left-handed
Last 10 · pre-match
LLWLWWWWLW
Kim J.
4-6 6-0 6-3
Boulais J.
Kim J.
4662
Boulais J.
6031

Jangjun Kim defeated Justin Boulais 4-6 6-0 6-3 in the Winston Salem CH qualifying round 1 on hard.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Kim J.serving80% hold

wins 64% of points on serve vs Boulais J.

Boulais J.serving73% hold

wins 60% of points on serve vs Kim J.

Serve advantage — Kim J.

Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About

Statistics

This season
Kim J.Boulais J.
1st serve in·Slight edge
68%
62%
1st serve points won·Even
72%
68%
2nd serve points won·Even
52%
48%
Service points won·Slight edge
65%
60%
Return points won·Even
40%
40%
Break points saved·Clear edge
74%
59%
Aces / match·Slight edge
4.2
3.5
Double faults / match·Clear edge
2.3
3.1

Averages over each player's completed matches in the selected window (6 vs 44). ATP, WTA & Challenger.

Umpiry Score

Pre-match
Kim J.
4.2
Heavy underdogUmpiry ScorePartial · surface data limited
  • Extended break: 1064 days (−1.5)
Boulais J.
4.8
Heavy underdogUmpiry ScorePartial · surface data limited
  • Extended break: 27 days (−0.3)
Form & Matchup
5.0No prior meetings
H2H
5.0
Surface form
2.2
0.0
Win streak
0.0
Fatigue & Travel
Prev. match
8.0
Context
5.0
Defending pts
5.0

The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.

Freshness

Recent load
Kim J.Boulais J.
Freshness·
—
87

Boulais J.: 11 days rest · 3 matches (14d). Higher means fresher. About

Conditions

Court speed
Mediumbalanced pace
SlowFast
Q2
Vandecasteele Q.
Papamalamis T.[6]
7-57-62
Trotter J.[1]
Kirchheimer S.[10]
7-635-76-4
Williams C.
Martinez Gomez P.
7-643-67-62
Milavsky D.[3]
Sheehy J.[8]
7-55-76-4
Winter E.[4]
Mosejczuk D.
7-666-3
Goode G.
Kim J.
6-41-66-1
Q1
Trotter J.[1]
Grant W.
7-646-1
Sheehy J.[8]
Quan R.
6-32-67-5
Kirchheimer S.[10]
Delgado A.
4-67-666-1
Martinez Gomez P.
Dostanic S.[2]
6-46-3
Williams C.
Perot R.[7]
6-36-4
Milavsky D.[3]
Szymkowiak K.
6-716-36-4
Winter E.[4]
Craig C.
6-16-0
Mosejczuk D.
Pedrico Kravtsov A.[12]
6-36-1
Goode G.
Poling K.[5]
6-26-1
Kim J.
Boulais J.[9]
4-66-06-3
Papamalamis T.[6]
Pascual Ferra R.
7-56-3
Vandecasteele Q.
Fenty A.[11]
6-36-2